You can add a title and description to an image through the FolioHD Manager. Here's how:
1. Click on a picture in the FolioHD Manager. The image will open in the right sidebar.
2. Enter a title and (optionally) a description. Then click Update Image.
Now when you visit your portfolio (you might need to refresh) and hover over the image, you'll see the title and description at the bottom of the image.